Engineering English
Arrhenius Equation
Chemical Engineering · Last updated: July 30, 2026 · How this entry was written
Definition: An empirical equation that describes the temperature dependence of the rate constant, incorporating the activation energy and pre-exponential factor. It is fundamental for predicting reaction rates at varying temperatures.
Example in context
“Using the Arrhenius equation, the engineer calculated that raising the temperature by 10 K would double the reaction rate.”
“Arrhenius denklemini kullanarak mühendis, sıcaklığı 10 K artırmanın reaksiyon hızını ikiye katlayacağını hesapladı.”
Where engineers use it
The Arrhenius equation is applied to model temperature sensitivity. Engineers use it to optimize reactor operating temperature and to understand catalyst deactivation kinetics.
Synonyms: Arrhenius law
Practice: can you use “Arrhenius Equation” at work?
During a scale-up study, the reaction rate at the pilot scale is slower than predicted from lab data. Use the Arrhenius equation to identify if temperature non-uniformity is the cause.
Show a model answer
“The Arrhenius equation relates rate constant to temperature and activation energy.”
“Arrhenius Equation” in 21 languages
| English | Arrhenius Equation |
|---|---|
| Turkish | Arrhenius denklemi |
| French | équation d'Arrhenius |
| German | Arrhenius-Gleichung |
| Spanish | ecuación de Arrhenius |
| Chinese | 阿伦尼乌斯方程 |
| Arabic | معادلة أرينيوس |
| Portuguese | equação de Arrhenius |
| Russian | уравнение Аррениуса |
| Japanese | アレニウスの式 |
| Italian | equazione di Arrhenius |
| Vietnamese | phương trình Arrhenius |
| Hindi | अरहेनियस समीकरण |
| Thai | สมการอาร์เรเนียส |
| Indonesian | persamaan Arrhenius |
| Korean | 아레니우스 방정식 |
| Bengali | আরহেনিয়াস সমীকরণ |
| Dutch | Arrhenius-vergelijking |
| Swedish | Arrhenius ekvation |
| Finnish | Arrhenius-yhtälö |
| Ukrainian | рівняння Арреніуса |
Frequently asked questions
What does Arrhenius Equation mean in engineering?
An empirical equation that describes the temperature dependence of the rate constant, incorporating the activation energy and pre-exponential factor. It is fundamental for predicting reaction rates at varying temperatures. In Chemical Engineering, the term carries a usage-frequency rating of 10/10 in the Engineering English library.
How do you pronounce Arrhenius Equation?
Arrhenius Equation is pronounced /əˈriːniəs ɪˈkweɪʒən/ (IPA). The Engineering English app plays audio for the term and checks your pronunciation with speech recognition.
How is Arrhenius Equation used in a sentence?
Example from an engineering context: “Using the Arrhenius equation, the engineer calculated that raising the temperature by 10 K would double the reaction rate.”
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